How to repair the engine jitter caused by hot weather?

When the weather is cold in winter, the engine will shake because of poor atomization of fuel injection and large gap between spark plugs. Engine jitter in summer is more due to the influence of fuel. In summer, the temperature is high and there is a lot of fuel vapor. In order to achieve the purpose of environmental protection, fuel vapor will be absorbed by the activated carbon tank on the car, enter the engine intake system through the control of electromagnetic valve, and finally be burned. However, in summer, when the weather is too hot and there is too much fuel vapor, the excess fuel supplied by the solenoid valve to the engine will affect the normal operation of the engine, thus causing the vehicle to shake. When the air conditioner is turned on, the load of the engine will also increase, and some problems that the engine can't feel at ordinary times are easy to appear after the load increases.